More than 100 school supervisors have been deprived of thousands of dollars in promotional raises this year because of bureaucratic bungling at the Department of Education, their union charged yesterday.

The Council of Supervisors and Administrators blasted the department’s personnel division for not updating the payroll records and giving new principals, assistant principals and other administrators their higher salaries.

In some instances, new assistant principals are being paid their old teacher’s salary – while new principal are being paid their old assistant principal’s salary.

The mix-up means supervisors are being shortchanged upwards of $1,000 per month.

“We are almost two months into the school year, and the Board of Education is still woefully behind in cleaning up the mess created by their reorganization,” said CSA vice president Ernest Logan.

“They may call this a ‘bump in the road,’ but seeing paycheck after paycheck missing hundreds of dollars is not just a bump, it’s a mountain of disrespect towards our hardworking school leaders.”

School Chancellor Joel Klein’s office vowed to correct the mess.

“We are working to accommodate the supervisors and administrators. We are striving to complete the process in time for the next payroll,” said Klein spokesman Peter Kerr.

He added that the pay increase will be retroactive.

The CSA slapped the city with 135 unjust labor complaints over the salary dispute and expect to file 40 more grievances by the end of the week.